基于岩石统计损伤理论的嵌岩桩竖向承载力计算  

Calculation of Vertical Bearing Capacity of Rock-socked Piles Based on Statistic Damage Theory for Rock

作　　者：赵明华[1] 单联君[1] 曹文贵[1] 

机构地区：[1]湖南大学岩土工程研究所,湖南长沙410082

出　　处：《中南公路工程》2004年第4期6-9,共4页Central South Highway Engineering

基　　金：国家自然科学基金资助项目(50378036)

摘　　要：深入分析了岩溶区嵌岩桩的承载机理及变形特性,在此基础上,针对桩端下伏溶洞情况,结合岩石统计损伤理论,提出了一种新的确定岩溶区嵌岩桩竖向承载力的方法,并采用修正的Mohr—Coulomb强度理论导出相应的计算公式,可全面考虑岩层各种不良因素的影响。Based on an analysis on the failure mechanism and deformation characteristics, a new method for determining the vertical bearing capacity of rock-socked piles with solution caverns underneath in karst ar()eas is proposed. The statistic damage theory for rock was used in the development of the method. In addition, formulations with considerations of various adverse conditions in rock strata are derived with modified Mohr-Coulomb theory.

关 键 词：嵌岩桩 竖向承载力 损伤理论 岩石 桩端 承载机理 变形特性 岩溶区 强度理论 溶洞 

分 类 号：U416.1[交通运输工程—道路与铁道工程] TU473[建筑科学—结构工程]